CN2563312Y - Engine small chain driving air distribution mechanism without air valve spring - Google Patents
Engine small chain driving air distribution mechanism without air valve spring Download PDFInfo
- Publication number
- CN2563312Y CN2563312Y CN 02244477 CN02244477U CN2563312Y CN 2563312 Y CN2563312 Y CN 2563312Y CN 02244477 CN02244477 CN 02244477 CN 02244477 U CN02244477 U CN 02244477U CN 2563312 Y CN2563312 Y CN 2563312Y
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- CN
- China
- Prior art keywords
- valve
- spring
- motor
- rocking arm
- gimmal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The utility model relates to an engine minor sprocket drive valve mechanism without any valve spring, comprising a cam shaft driven by a minor sprocket, an air inlet and outlet rocker arm, a rocker shaft and an air valve, wherein a valve adjusting screw base on the end part of the air inlet and outlet rocker arm is sleeved by a pulling support, a valve adjusting screw is inserted downward from the upper part of the pulling support by a nut and passes through the valve adjusting screw base; the valve adjusting screw is orderly sheathed with a sliding sleeve and a spring; an air valve fixing base is arranged on the lower part of the pulling support by a set screw; a valve stem is fixed on the air valve fixing base; an air valve return device is pressed on the other end part of the air inlet and outlet rocker arm driven by the cam shaft. The utility model has the advantages of canceling the valve spring used in the traditional valve mechanism, effectively increasing the engine power, making the running of the engine more smooth and lowering the abrasion of pats, along with no noises caused by fittings.
Description
Technical field
The utility model belongs to the vehicle motor technical field, is specifically related to a kind of motor minor sprocket transmission distribution device that does not have valve spring.
Technical background
Traditional motorcycle engine timing minor sprocket transmission distribution device has all designed valve spring on valve, being used for valve resets, working procedure is an engine timing minor sprocket drive cam shaft, camshaft actuated rocking arm; rocking arm drives valve; the tension force that overcomes valve, spring is finished the unlatching of valve or closed, and there is following shortcoming in this structure: 1, need during valve opening the power of motor to overcome the elastic force of valve spring, make motor 15% power consumption be arranged approximately on valve spring.2, because the elastic force of spring, it is inconsistent to make valve motor transmission when opening and closing feed, arrange the strength of two rocking arms, easily causes the roughness of engine fixed, this when engine idle is worked clearly.3, need certain valve clearance during the original structure engine operation, accessory easily produces noise.4, owing to the existence of valve spring, motor is whenever finished one action, and distribution parts such as timing gimmal must overcome the irregular impact of twice valve spring, cause the wearing and tearing of gas distribution system parts, and especially the load of gas distribution system is very big when high speed rotating.
Summary of the invention
The purpose of this utility model is the above-mentioned shortcoming at the prior art existence, a kind of motor gimmal transmission distribution device that does not have valve spring is provided, can increases engine power effectively, make engine running more stable, no accessory noise reduces the wearing and tearing of parts.
The technical solution of the utility model is as follows: a kind of motor gimmal transmission distribution device that does not have valve spring, comprise the camshaft, inlet and outlet rocking arm, pitman arm shaft and the valve that drive by minor sprocket, it is characterized in that: the valve adjuster seat of rocking arm end is with outward tries to stop people from fighting each other, the valve adjustments screw base is worn and passed to valve adjuster by nut from the top of trying to stop people from fighting each other, and is with sliding sleeve and spring outside valve adjuster successively.The valve fixed base is installed on the bottom of trying to stop people from fighting each other by positioning screwn, and valve stem is fixed on the valve fixed base.On the inlet and outlet rocking arm the other end that drives by camshaft, be pressed with the valve returning device.
Described valve returning device is by guiding trestle and be placed in two in it cover valve return top tube and return spring constitutes, valve return top tube is pressed in inlet and outlet rocking arm end respectively, the valve return that return spring is against separately pushes up between tube and the guiding trestle, and guiding trestle and camshaft stand are fixed.
Described valve adjuster seat is square, tries to stop people from fighting each other to be U-shaped, and its inner wall shape is corresponding with valve adjuster seat shape, and design is in order to prevent that the U type from trying to stop people from fighting each other and the swing of valve idol part like this.
The top of above-mentioned valve stem is that sphere contacts with valve adjuster; The positioning screwn that the valve fixed base is installed is a pair of pinnacle screw, round head bolt or sunk screw, has the groove that coincide with the surface of contact shape of positioning screwn on the valve fixed base.Its effect is to finish on the one hand valve with the rocking arm lifting that links, the Spielpassung when adjusting valve fixed base and U type on the other hand and trying to stop people from fighting each other activity.
The working principle of this mechanism: by the gimmal drive cam shaft rotation of former motor, the intake and exhaust cam on the camshaft is jack-up inlet and outlet rocking arm one end respectively, and the valve adjuster seat of the rocking arm the other end is tried to stop people from fighting each other by the U type and pushed valve downwards open, makes valve opening.When camshaft continues rotation, when the cam on it left rocking arm, the valve return on the guiding trestle drove valve return top tube and is pressed on the valve rocker under the effect of returning place force, the rocking arm end is descended synchronously; the other end of rocking arm is finished valve-closing by trying to stop people from fighting each other the valve pull-up with cam.
The advantage of this distribution device is:
1, owing to cancelled valve spring, the switching of valve is not needing the power of consumption of engine, and it is about 15% therefore can to increase power, but also has reduced oil consumption.
2, owing to cancelled valve spring, closing by newly-increased valve returning device of valve finished, and the top tube moves with the zero clearance with rocking arm, rocking arm and cam working face, can effectively reduce noise.
3, owing to cancelled valve spring, the motor transmission feeds, arranges the strength high conformity of two rocking arms, makes engine running more stable.
4, owing to cancelled valve spring, the valve clearance that needs during engine operation is that damping spring compensates automatically, and accessory can not produce noise.
5, owing to cancelled valve spring, the distribution transmission system does not need to overcome the powerful elastic force of former valve spring as the movable position of master, passive timing driving gear, cam, rocking arm etc., so the fricative wearing and tearing of machine work face reduce.
Description of drawings
Fig. 1 is the structural representation of the motor gimmal transmission distribution device of no valve spring;
Fig. 2 is that the A of Fig. 1 is to structural representation;
Fig. 3 is the C-C sectional drawing of Fig. 2.
Fig. 4 is the structural representation that Fig. 1 sees from top.
Embodiment
Among the figure: 1, rocking arm 2, camshaft stand 3, camshaft 4, flange plate 5, return spring 6, fixing pin 7, guiding trestle 8, return top tube 9, valve adjuster 10, nut 11, pad 12, sliding sleeve 13, damping spring 14, valve adjuster seat 15, positioning screwn 16, try to stop people from fighting each other 17, valve fixed base 18, valve stem 19, valve
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the inlet and outlet rocking arm 1 of this distribution device is driven by camshaft 3, and camshaft 3 is that the minor sprocket by motor drives, and flange plate 4 drive fits are installed in an end of camshaft, rule driven gear when being used for installing.This distribution device has been cancelled the valve spring in the former mechanism, structure after the improvement is as follows: the valve adjuster seat 14 overcoat U types of inlet and outlet rocking arm 1 end try to stop people from fighting each other 16, valve adjuster seat 14 is square, and try to stop people from fighting each other 16 inner wall shape of U type is corresponding with valve adjuster seat 14 shapes.Valve adjustments screw base 14 is worn and passed to valve adjuster 9 by nut 10, pad 11 from U type 16 tops of trying to stop people from fighting each other, and is with sliding sleeve 12 and buffering spring 13 outside valve adjuster 9 successively.Valve fixed base 17 is installed on try to stop people from fighting each other 16 bottom of U type by top positioning screwn 15, has the groove that the surface of contact shape with top positioning screwn 15 matches on the valve fixed base 17.Valve stem 18 upper ends are fixed on the valve fixed base 17, and the lower end is a valve 19.The top of valve stem 18 contacts for sphere with valve adjuster 9.On inlet and outlet rocking arm 1 the other end that drives by camshaft 3, be pressed with the valve returning device.The valve returning device is by guiding trestle 7 and be placed in the cover of two in it valve return top tube 8 and return spring 5 constitutes, valve return top tube 8 is pressed in inlet and outlet rocking arm 1 end respectively, the valve return that return spring 5 is against separately pushes up between tube 8 and the guiding trestle 7, and the upper end is fixing by fixing pin 6, and guiding trestle 7 is fixing with camshaft stand 2.
Claims (5)
1, a kind of motor gimmal transmission distribution device that does not have valve spring, comprise the camshaft, inlet and outlet rocking arm, pitman arm shaft and the valve that drive by minor sprocket, the valve adjuster seat that it is characterized in that inlet and outlet rocking arm end is with outward tries to stop people from fighting each other, the valve adjuster seat is worn and passed to valve adjuster by nut from the top of trying to stop people from fighting each other, and is with sliding sleeve and buffering spring outside valve adjuster successively; The valve fixed base is installed on the bottom of trying to stop people from fighting each other by positioning screwn, and valve stem is fixed on the valve fixed base; On the inlet and outlet rocking arm the other end that drives by camshaft, be pressed with the valve returning device.
2, the motor gimmal transmission distribution device of no valve spring according to claim 1, it is characterized in that described valve returning device is by guiding trestle be placed in two in it cover valve return top tube and return spring constitutes, valve return top tube is pressed in inlet and outlet rocking arm end respectively, the valve return that return spring is against separately pushes up between tube and the guiding trestle, and guiding trestle and camshaft stand are fixed.
3, the motor gimmal transmission distribution device of no valve spring according to claim 1 and 2 is characterized in that the valve adjustments screw base is square, tries to stop people from fighting each other to be U-shaped, and its inner wall shape is corresponding with valve adjustments screw base shape.
4, the motor gimmal transmission distribution device of no valve spring according to claim 1 and 2 is characterized in that valve stem top and valve adjuster are that sphere contacts.
5, the motor gimmal transmission distribution device of no valve spring according to claim 1 and 2, it is characterized in that the positioning screwn that the valve fixed base is installed is a pair of top screw, round head bolt or sunk screw, have the groove that coincide with the surface of contact shape of screw on the valve fixed base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02244477 CN2563312Y (en) | 2002-10-19 | 2002-10-19 | Engine small chain driving air distribution mechanism without air valve spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02244477 CN2563312Y (en) | 2002-10-19 | 2002-10-19 | Engine small chain driving air distribution mechanism without air valve spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2563312Y true CN2563312Y (en) | 2003-07-30 |
Family
ID=33716357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02244477 Expired - Fee Related CN2563312Y (en) | 2002-10-19 | 2002-10-19 | Engine small chain driving air distribution mechanism without air valve spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2563312Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877908A (en) * | 2011-10-03 | 2013-01-16 | 摩尔动力(北京)技术股份有限公司 | Short rod air distribution mechanism |
-
2002
- 2002-10-19 CN CN 02244477 patent/CN2563312Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877908A (en) * | 2011-10-03 | 2013-01-16 | 摩尔动力(北京)技术股份有限公司 | Short rod air distribution mechanism |
| CN102877908B (en) * | 2011-10-03 | 2015-01-21 | 摩尔动力(北京)技术股份有限公司 | Short rod air distribution mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |